Weather radar Hiroshima
Real-time precipitation radar · Hiroshima · Japan
Hiroshima climate table – average temperature, precipitation & sunshine hours
The climate table for Hiroshima shows long-term monthly averages (2000–2023): average high and average low temperature in °C, monthly precipitation (mm), rainy days and sunshine hours per month. Data source: ERA5 reanalysis (ECMWF) via the WDTEC Climate Archive.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 10.2° | 11.1° | 16.6° | 21.5° | 24.6° | 28.2° | 32.6° | 33.6° | 31° | 24.6° | 18.9° | 11.9° |
| Avg low (°C) | 2.2° | 2.7° | 7° | 11.2° | 15.5° | 20.7° | 25.5° | 26.3° | 23.5° | 15.5° | 9.1° | 3.9° |
| Precipitation (mm) | 51 | 76 | 122 | 128 | 176 | 213 | 198 | 303 | 161 | 70 | 87 | 46 |
| Rainy days | 8 | 10 | 13 | 11 | 11 | 15 | 15 | 16 | 14 | 9 | 7 | 10 |
| Sunshine hours | 231 | 222 | 255 | 262 | 276 | 260 | 312 | 305 | 258 | 254 | 240 | 224 |
| Humidity | 71% | 70% | 69% | 66% | 69% | 77% | 78% | 77% | 77% | 73% | 74% | 73% |
Best time to visit Hiroshima
The best time to visit Hiroshima is typically October. In this month the average high is 24.6°C, precipitation is 70 mm and sunshine duration is 254 hours. The annual average high is 22.1°C, total annual precipitation is 1631 mm (139 rainy days/year) and annual sunshine is 3099 hours.
Frequently asked questions about the weather in Hiroshima
How up to date is the weather radar for Hiroshima?
The weather radar for Hiroshima is updated every 5 minutes with new radar data from the OPERA composite radar. A 2-hour forecast animation is also available. Rainfall probability, wind gusts and UV index are available up to 14 days in advance.
What weather data is available for Hiroshima?
Besides the rain radar, RadarWeather provides for Hiroshima: rainfall probability, thunderstorm warning (CAPE index), wind gusts, UV index, air pressure, humidity, dew point, sunshine hours, snow line and a 14-day forecast based on ICON-D2, ECMWF IFS and GFS.
When are thunderstorms expected in Hiroshima?
The thunderstorm potential for Hiroshima is calculated from the CAPE index and lightning potential. Active storm cells and severe weather warnings are visible on the radar map in real time. Thunderstorm warnings are issued automatically as soon as storm cells are detected near Hiroshima.
What is the climate like in Hiroshima?
Hiroshima has an annual average high of 22.1°C. The warmest month is August (avg high 33.6°C), the coldest January (avg low 2.2°C). The wettest month is August with 303 mm, the driest December with 46 mm. Total annual precipitation is 1631 mm (139 rainy days). Annual sunshine is 3099 hours.